sidesplitter sidesman • sidesplitting · · · Info · Definitions · Synonyms · Characters · · sidesplitter · · Text Latin · · Script 12 · · Length Definitions · · · (noun) a joke that seems extremely funny. Synonyms: belly laugh, howler, thigh-slapper, scream, wow, riot. · · Noun Definition 1 Synonyms · · · belly laugh · · Synonym 1 howler · · Synonym 2 thigh-slapper · · Synonym 3 scream · · Synonym 4 wow · · Synonym 5 riot · · Synonym 6 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074